Fixed Q5 Flashcards
What are the 3 considerations for Pontic Design?
Biologic
Esthetic
Mechanical
What Pontic Design is concave?
Saddle Ridge Lap
What are the 5 types of Pontic Designs?
Sanitary/hygienic
Saddle Ridge Lap
Modified Ridge lap
Ovate
T/F
The tissue surface of pontics should be convex to allow for hygiene
True
Pontic must be at lease ___ mm to bone
2 mm
The receptor site for a Pontic must be ___mm to ___mm deep in Esthetic Areas
1mm
1.5mm
How far should an Ovate Pontic extend into the extraction site on the day of extraction?
What should it be shortened to at 4 weeks?
- 5mm
1. 5mm
Where can a Sanitary/Hygeinic pontic be used?
What material is it?
Posterior Mandible
Metal
A Conical Pontic is good in what teeth?
What materials (3) can be used?
Non-esthetic
All metal, metal-ceramic, all resin
Advantage to Modified Ridge Lap?
What materials (3) can be used?
Good esthetics
Metal-ceramic, All-resin, All ceramic
Advantage to Ovate Pontic?
What materials (3) can be used?
Good esthetics
Metal-ceramic, All-resin, All-ceramic
Siebert Classification:
describes space between teeth in terms of BONE (actions of space after tooth removed)
Class I: Horizontal Loss
Class II: Vertical Loss
Clas III: Horizontal and Vertical loss
In the case of Class I, II, or III bone loss, what can augment soft tissue deficiency?
Connective tissue graft
What Pontic design combines the best features of hygienic and saddle designs, resulting in esthetics with easy cleaning?
Modified Ridge Lap
The Modified Ridge Lap has a ___shaped area where the pontic touches the gingiva on the ___ side
T-shaped
Buccal
T/F
The greater the convexity in a Pontic, the easier it is to clean
True
What can be done to decrease shadow on the facial cervical of a Pontic?
re-countour
What Pontic should be shaped as convex as possible all around?
Conical
Where is the only point of contact in a Conical Pontic?
Center of residual ridge
A conical design may be unsuitable for what kinds of residual ridges?
*food catcher
Broad
What are the minimum Connector dimensions?
2mm height
3mm width
Load carrying capacity of a Connector is proportional to what?
Height squared x width
What rule do Zirconia FPD connectors have to follow?
Rule of 27
What is the Rule of 27?
Zirconia
Height squared x width = AT LEAST 27
Why is an extra appointment often necessary for a Metal-Ceramic FPD?
Extra soldering before porcelain stacked
If you’re going to do extra soldering on a Meta-Ceramic (or all metal) FPD, what should be the Maximum gap distance after sectioning?
0.25mm
If an additional solder is needed for a Pontic, what are the 2 steps after sectioning?
Verify marginal seat
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When is the Pre-Solder done?
When is the Post-Solder done?
before ceramic is applied to framework
after ceramic is applied to framework
